Unit:
Τομέας Ηλεκτρονικής Φυσικής και ΣυστημάτωνLibrary of the School of Science
Author:
Γερολυμάτος Παναγιώτης
Dissertation committee:
Ιωάννης Τίγκελης Αναπλ. Καθηγ., (επιβλέπων), Νικόλαος Ουζούνογλου Καθηγ., Δημήτριος Φραντζεσκάκης Καθηγ.
Original Title:
Μελέτη φαινομένων διάδοσης σε διηλεκτρικούς και φωτονικούς κυματοδηγούς
Summary:
This thesis studies the electromagnetic waves propagation phenomena in
dielectric and photonic waveguides, as well as the effect of various types of
discontinuities in their scattering properties. These waveguides are widely
used as components in integrated optical systems, and the study of the
scattering characteristics of various types of discontinuities is one of the
most important issues in the field of integrated optics and optical sensors.
Such discontinuities are the abrupt termination, the application of metallic
shutter transverse to the propagation direction and the anisotropy in the
refractive index distribution in waveguides with isolated substrate. In order
to analyze the scattering characteristics of such discontinuities, the integral
equation method is applied in combination with a new technique, where the field
is described by a series of Chebyshev polynomials and the desired convergence
is achieved by increasing the terms of the series. Based on this analysis,
numerical codes have been developed and several waveguide geometries have been
considered, while emphasis has been given on the effects of the discontinuities
in the scattering characteristics.
Keywords:
Dielectric slab waveguides, Ieft handed waveguides, Propagation, Scattering, Metamaterials
